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288968020 = 2251110191289
BaseRepresentation
bin10001001110010…
…100110101010100
3202010202002121021
4101032110311110
51042433434040
644401330524
710106121235
oct2116246524
9663662537
10288968020
11139129a50
1280936a44
1347b375c3
142a54108c
151a58024a
hex11394d54

288968020 has 48 divisors (see below), whose sum is σ = 663163200. Its totient is φ = 104894720.

The previous prime is 288968003. The next prime is 288968063. The reversal of 288968020 is 20869882.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223536 + ... + 224824.

It is an arithmetic number, because the mean of its divisors is an integer number (13815900).

Almost surely, 2288968020 is an apocalyptic number.

288968020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

288968020 is an abundant number, since it is smaller than the sum of its proper divisors (374195180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

288968020 is a wasteful number, since it uses less digits than its factorization.

288968020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328 (or 2326 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 288968020 is about 16999.0593857425. The cubic root of 288968020 is about 661.1245139313.

The spelling of 288968020 in words is "two hundred eighty-eight million, nine hundred sixty-eight thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 1019 1289 2038 2578 4076 5095 5156 6445 10190 11209 12890 14179 20380 22418 25780 28358 44836 56045 56716 70895 112090 141790 224180 283580 1313491 2626982 5253964 6567455 13134910 14448401 26269820 28896802 57793604 72242005 144484010 288968020